During the nineteenth century, a young radical poet named Sebastian (Franco Branciaroli) breaks into an old dilapidated castle in Oberwald on a dark stormy night intending to kill the queen and free his country. The queen (Monica Vitti) has been in mourning for ten years for her husband the king who was assassinated on their wedding day. Sebastian, who faints before he can kill the queen, is the spitting image of the assassinated king. Sebastian and the queen talk, and the queen discovers that Sebastian once wrote a subversive poem that she liked, even though it was attacking her. The queen dares Sebastian to kill her, otherwise she vows to kill him.